Codeforces Round #462 (Div. 2) ----D

 1 #include<bits/stdc++.h>
 2 #define LL long long
 3 using namespace std;
 4 LL p;
 5 int k;
 6 int cnt;
 7 LL now;
 8 vector<int>S;
 9 int main()
10 {
11     scanf("%lld%d",&p,&k);
12     now=p;
13     while(now<0 || now>=k){
14         LL u=-now/k;
15         if(now<0&&(u*k+now!=0))u++;
16         S.push_back((int)(now+u*k));
17         now=u;
18         cnt++;
19     }
20     S.push_back((int)now);
21     cout<<cnt+1<<endl;
22     int siz=S.size();
23     for(int i=0;i<siz;i++)cout<<S[i]<<" ";
24     return 0;
25 }